Improvement in harvesters



DAVIS & WALDRON.

Harvester Cutter.

Patented Jan. 7, 1862-.

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UNITED STATES PATENT OFFICE.

THEODORE DQDAVIS, OF SYRACUSE, AND JOHN M. WALDRON, OF SOUTH OTSELIG,NEW YORK.

IMPROVEMENT IN HARVESTERS.

Specification forming part of Letters Patent N0. 34.097, dated January7, 1862.

To aZZ whom it may concern:

Be it known that we, THEODORE D. DAVIS, of Syracuse, in the county ofOnondaga and State of New York, and JOHN M. WVALDRON, of South Otselic,in the county of Ohenango and State of New York, have invented a new anduseful Improvement in the Cutting Apparatus of Harvesting-Machines; andwe do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, 'making part of this specification, in which Figure 1 is aplan of a portion of our improved cutter. Fig. 2 is a verticallongitudinal section of the same (on a larger scale) at x m, Fig. 1.Fig. 3 is a transverse section of the same at y y.

Similar letters of reference indicate corresponding parts in the severalfigures.

The nature of our invention consists in an improved manner of attachinga set of movable cutter-blades to the cutter-bar, as herein afterexplained.

A represents the cutter-bar.

B B B are a set of movable blades,-formed with tapering heels, as shownin Fig. 1, an

fitting in dovetails in the bar A, as shown in Fig. 2.

a a are hooked lugs, projecting upward from the bar A, and confining awedge-shaped 1ongitudinal rod, 0, which is passed endwise between andbeneath them. ,The smaller end of the said rod passes through aflange,a, upon the end of the bar A, and is threaded to receive a nut, c. Therod 0 bears upon the upper surface of the blades B and againstprotuberances I) b 1) upon their heels, and thus secures them in theirdovetail seats. The end blade, B, maybe perforated, as shown, to passover the eye E, to which the connecting-rod is attached, and the rod Cmay pass through the said eye above the blade. The successive frontlugs, a, are formed with the faces farther in front of the center of thebar, to accom modate the increasing width of the bar 0. By this meansthe rear edge of the said rod is always parallel with the bar, and thusbears equally upon the protuberances b of all the blades, so as totighten them all simultaneously and equally. The blades, with theexception of that which fits Over the eye E, are (in practice)counterparts of each other, so that each will fit equally well in anyplace.

If it be needful to grind, repair, or replace any of the blades 13, thenut c is removed and the rod O withdrawn. The blades will rest in theirdovetails until taken out. When the blades are replaced, as desired, therod 0 is again inserted, and, being drawn up by the nut c, presses theblades into position and holds them firmly backwardwithin theirdovetails, the latter keeping the blades from rising.

Having thus described our invention, what we claim as new, and desire tosecure by LettersPatent, is-- Securing movable blades in dovetailgrooves in the cutter-bar by means of a tapering red, 0, operating inconnection with lugs a and protuberances 12, substantially as explained.

The above specification of our improved cutter-bar for harvesters signedthis 12th day of November, 1861.

T. D. DAVIS. J. M. XVALDRON.

WVitnesses to T. D. Daviss signature:

OOTAVIUS KNIGHT, L. WV. BENDRIJ.

Vitnesses to John M. XVa-ldrons signature:

SILAS E. XVARREN, J. FLOYD THOMPsON.

